I was playing on isar, i think this replay shows that you can still win isar against overwhelming odds if your opponents dont know when to retreat.

I was playing elves and my ally was using drakes, we were playing against elves on my side (mirror) and he had undeads on his, not very lucky combination. First few turns we were camping, not much was hapening, i tried to bait the elvish player to attack me once but didnt worked, then the night fell and my ally got almost entirely obliterated by the undeads, at this point i thought that we are going to loose it, i put some units to hold my ally's flank, he still had some units but they were quickly killed by DAs, nevertheless although losing most of our units we continued to bring more units to the battlefield and we were slowly pushing them back, we could still loose it had the undead player not rushed with all his units as soon as he got back to his castle and recruited it full of DAs. But i think you should see it for yourself, its fairly short replay.